const Koa = require("koa");
const app = new Koa();
const views = require("koa-views");
const json = require("koa-json");
const onerror = require("koa-onerror");
const bodyparser = require("koa-bodyparser");
const logger = require("koa-logger");

const index = require("./routes/index");
const users = require("./routes/users");

const mongoose = require("mongoose");
const cors = require('koa2-cors')


app.use(cors({
    exposeHeaders: ['WWW-Authenticate', 'Server-Authorization', 'Date'],
    maxAge: 100,
    credentials: true,
    allowMethods: ['GET', 'POST', 'OPTIONS'],
    allowHeaders: ['Content-Type', 'Authorization', 'Accept', 'X-Custom-Header', 'anonymous'],
}));

mongoose.connect(
  // "mongodb://localhost:27017/HourseSpider",
  "mongodb://47.95.236.69:27918/HourseSpider",
  { useUnifiedTopology: true, useNewUrlParser: true },(err,db)=> {
    if (err) {
      console.error("Failed to connect to database");
    } else {
      console.log("Connecting database successfully");
    }
  }
);
// error handler
onerror(app);

// middlewares
app.use(
  bodyparser({
    enableTypes: ["json", "form", "text"]
  })
);
app.use(json());
app.use(logger());
app.use(require("koa-static")(__dirname + "/public"));

app.use(
  views(__dirname + "/views", {
    extension: "pug"
  })
);

// logger
app.use(async (ctx, next) => {
  const start = new Date();
  await next();
  const ms = new Date() - start;
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
});

// routes
app.use(index.routes(), index.allowedMethods());
app.use(users.routes(), users.allowedMethods());

// error-handling
app.on("error", (err, ctx) => {
  console.error("server error", err, ctx);
});

module.exports = app;
